SMR 5: Restrictions on the use of substances having hormonal or thyrostatic action and beta-agonists in farm animals
It is illegal to use substances that have a hormonal or thyrostatic action and beta-agonists for growth promotion in stock farming. Some substances can be used for authorised therapeutic purposes only, but these must be administered to a clearly identified animal only by a veterinarian, who must record details of the treatment in a register/record book.
What you must do
Other than the therapeutic exemptions allowed (for the use of veterinary medicines containing testosterone, progesterone, allyl trenbolone and beta-agonists, and having oestrogenic, androgenic or gestagenic action), you must not use these restricted substances:
- thyrostatic substances
- stilbenes, stilbene derivatives, their salts and esters
- oestradiol 17ß and its ester-like derivatives
- substances having oestrogenic, androgenic or gestogenic action, and beta-agonists.
You must not:
- give food-producing animals restricted substances
- have on your farm, place on the market or send to slaughter for human consumption any animal that has been given any restricted substance
- place on the market meat or any other animal product from an animal that has been given any restricted substance
- have substances on your farm containing beta-agonists to induce tocolysis in cows when calving (for example, clenbuterol hydrochloride).
- comply with the correct withdrawal periods if your food-producing animals have been given any of the restricted substances in line with the permitted exceptions. Your veterinary surgeon can advise on the withdrawal periods for prescribed veterinary medicines
- make veterinary medical records about restricted substances you’ve used available to inspectors when asked for them.
The Product Information Database is on the Veterinary Medicines Directorate website at www.gov.uk/vmd. It contains the most up to date information on medicines authorised for use in farm animals in the UK. The database includes any withdrawal periods.
Veterinary Medicines Directorate: 01932 336911